The third and largest wave began in 1800 with the harnessing of fossil fuels. With enormous, cheap energy at its disposal, the human population grew rapidly from 1 billion in 1800 to 2 billion in 1930 ...

While most estimates place the current human population at around 8.2 billion, a new study suggests we might be vastly underrepresenting rural areas. By analyzing 300 rural dam projects across 35 ...